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-rw-r--r--libc/stdio/_rfill.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libc/stdio/_rfill.c b/libc/stdio/_rfill.c
index d61b1a9..e9d2fa6 100644
--- a/libc/stdio/_rfill.c
+++ b/libc/stdio/_rfill.c
@@ -24,7 +24,7 @@ size_t attribute_hidden __stdio_rfill(register FILE *__restrict stream)
size_t rv;
__STDIO_STREAM_VALIDATE(stream);
- assert(stream->__filedes >= -1);
+ assert(stream->__filedes >= -2);
assert(__STDIO_STREAM_IS_READING(stream));
assert(!__STDIO_STREAM_BUFFER_RAVAIL(stream)); /* Buffer must be empty. */
assert(__STDIO_STREAM_BUFFER_SIZE(stream)); /* Must have a buffer. */